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Testing Cables Connectors Issues Need Your Help - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


gangsway
 Post subject: Testing cables connectors issues need your help
Posted: Mon Sep 07, 2009 4:23 am 
 
Captain

Joined: Tue Nov 11, 2008 5:03 am
Posts: 16
Location: Shanghai, China
One of my cable set connector to 8753ES is magnetical, which means the SmCo can attach to it, since the connectors are made of copper, should be non-magnetical, is it means my connector is of problem? It seems the copper material fo rthi s connector is not very pure, how it effects my testing result. I use it to test isolator built with stainless steel housings.

Many thanks for your response.

_________________
glad to learn from you


 
   
 
Chebyshev
 Post subject: Re: Testing cables connectors issues need your help
Posted: Fri Sep 18, 2009 4:08 pm 
 
Lieutenant

Joined: Fri May 26, 2006 8:20 am
Posts: 4
The base metal for your connector is very likely steel or some alloy, not pure copper. So it might have some magnetic properties. If it hase a nickel plating, then that will also contribute to the magnetic tendency. It should not affect your testing, even on a circulator/isolator as long as it is in a connectorized housing.

The main problem with magnetized connectors is a tendency to accumulate metallic particles in the interface that can cause poor VSWR and in the case of high power measurements, PIM (passive intermods) issues.

If you are worried about magnetic connectors, find some non-magnetic in-series connector savers to use between your test cables and the DUT.

_________________
--- Chebyshev


 
   
 
gangsway
 Post subject: Re: Testing cables connectors issues need your help
Posted: Tue Sep 22, 2009 10:21 am 
 
Captain

Joined: Tue Nov 11, 2008 5:03 am
Posts: 16
Location: Shanghai, China
Thanks. Appreciate!

_________________
glad to learn from you






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